11768166778 has 16 divisors (see below), whose sum is σ = 18087549480. Its totient is φ = 5739059200.

The previous prime is 11768166763. The next prime is 11768166829. The reversal of 11768166778 is 87766186711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9945474529 + 1822692249 = 99727^2 + 42693^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334968 + ... + 368428.

Almost surely, 2^11768166778 is an apocalyptic number.

11768166778 is a deficient number, since it is larger than the sum of its proper divisors (6319382702).

11768166778 is a wasteful number, since it uses less digits than its factorization.

11768166778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37793.

The product of its digits is 4741632, while the sum is 58.

The spelling of 11768166778 in words is "eleven billion, seven hundred sixty-eight million, one hundred sixty-six thousand, seven hundred seventy-eight".